Latest Contributions by MarkBoucher

If you have graphical text or other graphical elements, the labels will not show where there is a conflict. ... View more

... This results in ~5,000 catchments.  GIS seizes up once I get to the drainage line processing tool.  ... My Guess is that you are asking for too many catchments, though I'm not aware of any upper limit Arc Hydro has. Make sure the temp files are cleared out before you start (ApUtilities>Additional Utilities>Clean User's Temp File), and reduce the number of catchments by increasing the initiate streams threshold. (I'm using v10. Not sure if this is in earlier versions. See http://forums.arcgis.com/threads/29202-Solving-Arc-Hydro-Problems-by-deleting-TMP-Files for another way to clear the temp files.). Also, I've found Arc Hydro will look like it is seized up when it is still processing. Maybe you need to let it go longer before you cancel it. Can you let it run over night? If at your wits end, start with a fresh mxd and simplify things: small rawdem (takes less time), big initiate streams value (to see if size matters). ... View more

I get so many concerns about drain issues & while there are typical drain issues, there is not a normal, easy respond to any drain issue you may be having. If you have a bit of hair in the trap, yes it will fresh that but a plunger will do the same. Please save your income & don't buy any junk. celinaaniston86, His question has nothing to do with sewer lines. He is talking about a GIS term used in surface hydrology and dem processing. ... View more

If you use Arc Hydro, you can "build a wall" (dam), fill the area behind it, and compare see how much fill there is behind it. Take the rawdem and put a polyline at the potential dam sites. Use the BuildWall function under the Terrain Processing>DEM Manipulation menu to build a wall using the polyllines: Call the walled dem "DamDEM". Fill the sinks of DamDEM to make "DamFil" Do raster math: DamFil - rawdem = ResFil The ResFil raster will generally represent the reservoir(s) behind the wall dam(s). I did this with and without burning streams. I've attached a pdf of my results when doing this without burning streams. When I did this with burning streams, the wall left a low spot where the stream goes. I believe the Build Walls simply adds to the rawdem the wall height input in the Build Walls dialogue. It does not make a level wall. It could be possible to do this "manually" by entering your polylines give them an elevation and create a raster using the wall elevation values from the polylines. Then, you could do some raster manipulation to choose the highest value between the the rawdem and the walldem to make a damdem that has the dam height you want. To iterate this through some trial and error, I'd make a model using Model Builder so I could "automate" the process. Your dam site selection criteria may help you narrow down the site location. Of course, the geologic criteria could rule out many areas. Possibly obtaining the soil survey maps that identify rock outcrops would be useful. ... View more

Colin - It looks like the GUI is not written for V10. ... View more

I don't use GeoRAS at all. However, when I look at your Output.xlsx file, I see many "Target location not specified..." messages. From my experience in Arc Hydro, the "Target" is the file location ArcMap is trying to create the file in. Look for the where GeoRAS defines the output files and make sure the directory and filename are correct. I've had Arc Hydro keep the Target from the previous Arc Hydro project and had to correct it before certain functions would work. I Googled "GeoRAS target" and found ftp://ftp-fc.sc.egov.usda.gov/SD/www/Technical/Engineering/Hydrology/Geo_Ras_xsec_instructions.pdf In this I searched for "target" and found that they use the ApUtilities menu also. Look under the ApUtilities menu to Set the target locations. Also, in Arc Hydro, there is an option to reset the target loations. GeoRAS might have that too. ... View more

See http://forums.arcgis.com/threads/29202-Solving-Arc-Hydro-Problems-by-deleting-TMP-Files for some possible solutions. Also, in the Arc Hydro toolbar under ApUtilities, there are some other functions under the Additional Utilities menu that might help. One is called Clean User's Temp Folder which deletes the temp files and folders. I understand that deleting the temp files and folders reduces conflicts with new temp files that are created during certain Geoprocessing (and other?) operations. If it has been a long time since you deleted the temp files, this could help. The next is Rest Target Locations. I used this once and it solve my problem. It might be worth studying these functions to see what they do and what they are for. ... View more

See solutions at http://forums.arcgis.com/threads/41988-Resetting-Raster-calculation-limits. ... View more

See also http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#//001w00000009000000 for more possibilities. ... View more

I did find a solution to another problem. It had to do with the processing extent. I'm not sure if this would solve the Catchment Polygon Processing problem. I've posted the answer to the processing extent issue here:http://forums.arcgis.com/threads/41988-Resetting-Raster-calculation-limits?p=155882#post155882 ... View more

I was able to get some ESRI support time with Jon B. from ESRI (thanks Jon!). I shared my screen with him and we walked through the processes to make sure they worked. The solution was to go to the "Geoprocessing" menu> "Environments..." > "Processing Extent". Under Processing Extent choose a layer that you know covers the full extent of the waters you are processing and click OK. This should ensure that the processing extent is large enough to do what you want. To check this, I purposefully choose a Processing Extent to match that of my Batch Points and ran the subwatershed delineation. The result was like the original, the limits of the subwatersheds were constrained by the extent of the Batch Points. When I changed the extent to the rawdem layer and reran the subwatershed delineation, the results were correct. So the solution was simple. I'm still not sure why the processing extent was set to that of the batch point layer when I encountered the problem. ... View more

I'm having the same problem on another project. Any ideas out there? ... View more

I just found the function in Arc Hydro (ArcGIS v10) for clearing the temp files. It is under ApUtilities>Additional Utilities>Clean User's Temp Folder. I think the only issue with using this is if you have a function that you recently ran that "might" be using a file in the temp folder, you might have to redo something. ... View more